基本解释[机械工程]红外烟幕英汉例句双语例句Three methods about measuring transmissivity of IR smoke screen were introduced in this paper.介绍了红外烟幕透过率测量的三种方法。ir smoke screen更多例句词组短语短语Compound IR smoke screen 复合红外烟幕ir smoke screen更多词组专业释义机械工程红外烟幕